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Table 5 Clinical features, outcomes, and complications of KP between groups of normal and elevated CRP

From: Radiological and clinical outcomes of balloon kyphoplasty for osteoporotic vertebral compression fracture in patients with rheumatoid arthritis

Variable Normal CRP Elevated CRP P value
Patients/vertebrae 26/41 72/117  
Age (year) 73.0 70.7 0.298
Gender (male to female) 2:24 6:66 0.999
Time to surgery 22.0 20.6 0.107
BMD (g/cm2) 0.53 0.54 0.912
ESR (mm/h) 31.0 37.6 0.114
CRP (mg/dL) 1.65 14.05 < 0.01
Glucocorticoid users 20 45 0.230
Cement leakage (vertebra) 11 (26.8%) 32 (27.3%) 0.947
Refracture 1 2 0.999
Adjacent vertebral fracture 4 14 0.999
Radiological outcomes
Compression rate (%) Preop 62.28% 58.89% 0.450
1 year FU 73.21% 70.66% 0.281
Local kyphotic angel (°) Preop 7.95 7.94 0.692
1 year FU 4.25 4.14 0.074
Clinical outcomes
VAS Preop 8.05 8.13 0.563
1 year FU 2.27 2.35 0.585
ODI Preop 80.16 81.47 0.412
1 year FU 27.02 27.41 0.493
  1. Values are given as mean ± SD. ESR indicates erythrocyte sedimentation rate, CRP indicates c-reactive protein, BMD indicates bone mineral density, and Refracture indicates the operated vertebral body refractured again after KP. Preop indicates preoperation, FU indicates follow-up, VAS indicates visual analog scale, and ODI indicates Oswestry disability index